According to a pair of tweets sent out by Tesla CEO, Elon Musk, an updated version of the self-driving software used in their cars is going to be implemented soon. The American company disabled the self-driving tech used in their cars in October last year as the software was not fully complete at the time. Since then, drivers have been unable to use the advanced features of Autopilot.

Musk stated in his tweets that the company will update the software on 1000 of their test cars on Monday to see if the software performs adequately. The rest of their fleet will be running the update in a mode dubbed “shadow mode,” which essentially programs the computer to simulate what it would have done in each situation without actually having that situation occur. This will allow the company to analyze and test the software in a multitude of conditions without physically interfering with the vehicles.

If everything runs according to plan, Musk states that they will switch all their vehicles into active mode by the end of this week.

While the software will not be released to the general public yet as it is still years away from full implementation, the company claims that the hardware is fully capable of supporting Autopilot. Due to problems in the past with false starts, it would not be safe to fully implement such a risky feature so soon in the process.

Due to the fatal accident that occurred last year in a Tesla vehicle with autopilot activated, a significant amount of negative PR was thrown Tesla’s way, regardless of the fact that it was said to be the driver’s fault. With the autopilot software being one of the most revolutionary and significant advantages that Tesla has over other companies, it is imperative that everything goes well for Musk and his company. ​